Examining the Factor Structure and Discriminative Utility of the IBQ-R in Infant Siblings of Autistic Children

Citation:

Sung, S., Fenoglio, A., Wolff, J. J., Schultz, R. T., Botteron, K. N., Dager, S. R., Estes, A. M., et al. (Forthcoming). Examining the Factor Structure and Discriminative Utility of the IBQ-R in Infant Siblings of Autistic Children. Child Development.

Abstract:

Using the Infant Behavior Questionnaire-Revised in a longitudinal sample of infant siblings of autistic children (HR; n=427, 171 female, 83.4% White) and a comparison group of low-risk controls (LR, n=200, 86 female, 81.5% White), collected between 2007 and 2017, this study identified an invariant factor structure of temperament traits across groups at 6 and 12 months. Second, after partitioning the groups by familial risk and diagnostic outcome at 24 months, results reveal an endophenotypic pattern of Positive Emotionality at both 6 and 12 months, (HR-ASD < HR-no-ASD < LR). Third, increased ‘Duration of Orienting’ at 12 months was associated with lower scores on the 24-month developmental outcomes in HR infants. These findings may augment efforts for early identification of ASD.

Last updated on 04/13/2022